        html,
        body {
            width: 100%;
            height: 100%;
        }
        
        * {
            margin: 0;
            padding: 0;
        }
        
        
        body {
            background-color: #020024;
        }
        
        .word {
            font-size: 22px;
            text-align: center;
            color: gold;
            padding-top: 50px;
            letter-spacing: 5px;
            text-shadow: 2px 4px 9px rgba(255, 255, 255, 0.7);
        }
        /* 圣诞树外层div */
        
        .tree {
            width: 200px;
            height: 300px;
            margin: 80px auto 0 auto;
            position: relative;/*相对定位*/
            /* border: 1px solid #fff; */
        }

        .star{
            width: 50px;
            height: 50px;
            position: absolute;
            background-color: #fff;
            border-radius: 50%;
            -webkit-border-radius: 50%;
            -moz-border-radius: 50%;
            -ms-border-radius: 50%;
            -o-border-radius: 50%;
            top: -25px;
            z-index: 1000;
            left: 50%;
            transform: translate(-50%);
            -webkit-transform: translate(-50%);
            -moz-transform: translate(-50%);
            -ms-transform: translate(-50%);
            -o-transform: translate(-50%);
            animation: starLight 1.5s ease infinite alternate;
            -webkit-animation: starLight 1.5s ease infinite alternate;
}
.star-in{
    position: absolute;
    left: 50%;
    top: 50%;
    border-right: 100px solid transparent;
    border-bottom: 70px solid gold;
    border-left: 100px solid transparent;
    transform: translateX(-50%) translateY(-50%) rotate(35deg) scale(0.14);
    -webkit-transform: translateX(-50%) translateY(-50%) rotate(35deg) scale(0.14);
    -moz-transform: translateX(-50%) translateY(-50%) rotate(35deg) scale(0.14);
    -ms-transform: translateX(-50%) translateY(-50%) rotate(35deg) scale(0.14);
    -o-transform: translateX(-50%) translateY(-50%) rotate(35deg) scale(0.14);
}

.star-in::before{
    border-right: 30px solid transparent;
    border-bottom: 80px solid gold;
    border-left: 30px solid transparent;
    position: absolute;
    top: -45px;
    left: -65px;
    content: '';
    transform: rotate(-35deg);
    -webkit-transform: rotate(-35deg);
    -moz-transform: rotate(-35deg);
    -ms-transform: rotate(-35deg);
    -o-transform: rotate(-35deg);
}

.star-in::after{
    border-right: 100px solid transparent;
    border-bottom: 70px solid gold;
    border-left: 100px solid transparent;
    position: absolute;
    top: 3px;
    left: -105px;
    content: '';
    transform: rotate(-70deg);
    -webkit-transform: rotate(-70deg);
    -moz-transform: rotate(-70deg);
    -ms-transform: rotate(-70deg);
    -o-transform: rotate(-70deg);
}

@keyframes starLight{
    0%{
        background: radial-gradient(ellipse at center,
        gold 0%,
        rgba(255,240,158,0.5)42%,
        rgba(255,242,173,0.2)58%,
        rgba(255,255,255,0.1)100%);
    }
    25%{
        background: radial-gradient(ellipse at center,
        gold 0%,
        rgba(255,240,158,0.5)40%,
        rgba(255,242,173,0.2)60%,
        rgba(255,255,255,0.1)100%);
    }
    50%{
        background: radial-gradient(ellipse at center,
        gold 0%,
        rgba(255,240,158,0.5)38%,
        rgba(255,242,173,0.2)62%,
        rgba(255,255,255,0.1)100%);
    }
    75%{
        background: radial-gradient(ellipse at center,
        gold 0%,
        rgba(255,240,158,0.5)36%,
        rgba(255,242,173,0.2)64%,
        rgba(255,255,255,0.1)100%);
    }
    100%{
        background: radial-gradient(ellipse at center,
        gold 0%,
        rgba(255,240,158,0.5)34%,
        rgba(255,242,173,0.2)66%,
        rgba(255,255,255,0.1)100%);
    }

}

.leaf{
    position: absolute;
    left: 50%;
    top: 3%;
    margin-left: -30px;
    background-color: rgba(14, 110, 14);
    width: 60px;
    height: 60px;
    border-radius: 0 10px 35px 10px;
    -webkit-border-radius: 0 10px 35px 10px;
    -moz-border-radius: 0 10px 35px 10px;
    -ms-border-radius: 0 10px 35px 10px;
    -o-border-radius: 0 10px 35px 10px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    box-shadow: 2px 7px 2px rgba(43, 43, 43, 0.2);
}

.edge{
    position: absolute;
    left: 0;
    bottom: 0;
    background: rgba(14, 110, 14);
    width: 25px;
    height: 30px;
    border-radius: 0 10px 35px 10px;
    -webkit-border-radius: 0 10px 35px 10px;
    -moz-border-radius: 0 10px 35px 10px;
    -ms-border-radius: 0 10px 35px 10px;
    -o-border-radius: 0 10px 35px 10px;
    transform: translateY(50%) translateX(0);
    -webkit-transform: translateY(50%) translateX(0);
    -moz-transform: translateY(50%) translateX(0);
    -ms-transform: translateY(50%) translateX(0);
    -o-transform: translateY(50%) translateX(0);
}

.edge.right{
    position: absolute;
    left: unset;
    bottom: unset;
    top: 0;
    right: 0;
    background: rgba(14, 110, 14);
    width: 25px;
    height: 30px;
    border-radius: 0 10px 35px 10px;
    -webkit-border-radius: 0 10px 35px 10px;
    -moz-border-radius: 0 10px 35px 10px;
    -ms-border-radius: 0 10px 35px 10px;
    -o-border-radius: 0 10px 35px 10px;
    transform: translateY(0) translateX(50%);
    -webkit-transform: translateY(0) translateX(50%);
    -moz-transform: translateY(0) translateX(50%);
    -ms-transform: translateY(0) translateX(50%);
    -o-transform: translateY(0) translateX(50%);
}
/* 双数修改背景颜色 */
.leaf:nth-child(even){
    background-color: #0f880f;
}
.leaf:nth-child(even) .edge{
    background-color: #0f880f;
}
/* 最上面 */
.leaf:nth-child(1){
    z-index: 100;
    transform: rotate(45deg) scale(0.8);
    -webkit-transform: rotate(45deg) scale(0.8);
    -moz-transform: rotate(45deg) scale(0.8);
    -ms-transform: rotate(45deg) scale(0.8);
    -o-transform: rotate(45deg) scale(0.8);
}
/* 第二 */
.leaf:nth-child(2){
    z-index: 99;
    top: 15%;
    transform: rotate(45deg) scale(1.3);
    -webkit-transform: rotate(45deg) scale(1.3);
    -moz-transform: rotate(45deg) scale(1.3);
    -ms-transform: rotate(45deg) scale(1.3);
    -o-transform: rotate(45deg) scale(1.3);
}
.leaf:nth-child(3){
    z-index: 98;
    top: 28%;
    transform: rotate(45deg) scale(1.6);
    -webkit-transform: rotate(45deg) scale(1.6);
    -moz-transform: rotate(45deg) scale(1.6);
    -ms-transform: rotate(45deg) scale(1.6);
    -o-transform: rotate(45deg) scale(1.6);
}
.leaf:nth-child(4){
    z-index: 97;
    top: 41%;
    transform: rotate(45deg) scale(1.9);
    -webkit-transform: rotate(45deg) scale(1.9);
    -moz-transform: rotate(45deg) scale(1.9);
    -ms-transform: rotate(45deg) scale(1.9);
    -o-transform: rotate(45deg) scale(1.9);
}
.leaf:nth-child(5){
    z-index: 96;
    top: 54%;
    transform: rotate(45deg) scale(2.2);
    -webkit-transform: rotate(45deg) scale(2.2);
    -moz-transform: rotate(45deg) scale(2.2);
    -ms-transform: rotate(45deg) scale(2.2);
    -o-transform: rotate(45deg) scale(2.2);
}
.trunk{
    width: 25px;
    height: 45px;
    border-radius: 0 0 3px 3px;
    -webkit-border-radius: 0 0 3px 3px;
    -moz-border-radius: 0 0 3px 3px;
    -ms-border-radius: 0 0 3px 3px;
    -o-border-radius: 0 0 3px 3px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    bottom: 20px;
    z-index: 1;
    box-shadow: 0 0 10px 5px rgb(19, 19, 19);
    background: linear-gradient(0deg,#6d411b 0%,#5a341d 64%);
}

.ball{
    width: 20px;
    height: 20px;
    background: #f00;
    box-shadow: -1px -1px 6px inset #600,1px 1px 8px inset #ffc9c9;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    z-index: 101;
    position: absolute;
}
.b1{
    left: 25%;
    top: 30%;
}
.b2{
    left: 35%;
    top: 50%;
}
.b3{
    left: 65%;
    top: 20%;
}
.b4{
    left: 45%;
    top: 22%;
}
.b5{
    left: 40%;
    top: 72%;
}
.b6{
    left: 60%;
    top: 52%;
}
.b7{
    left: 50%;
    top: 62%;
}
.b8{
    left: 80%;
    top: 42%;
}
.b9{
    left: 10%;
    top: 62%;
}
.b4,.b5,.b6{
    background: #ececec;
    box-shadow: -1px -1px 6px inset #615f5f,1px 1px 8px inset #fff;
}
.b7,.b8,.b9{
    background: gold;
    box-shadow: -1px -1px 6px inset #3a3101,1px 1px 8px inset #fff;
}

.sparkle span{
    display: block;
    position: absolute;
    font-size: 20px;
    z-index: 101;
    color: #fff;
    animation: lights 1.5s ease infinite alternate;
    -webkit-animation: lights 1.5s ease infinite alternate;
}
/* 闪烁动画 */
@keyframes lights{
    0%,100%{
        transform: scale(1);
        -webkit-transform: scale(1);
        -moz-transform: scale(1);
        -ms-transform: scale(1);
        -o-transform: scale(1);
    }
    50%{
        transform: scale(1.5);
        -webkit-transform: scale(1.5);
        -moz-transform: scale(1.5);
        -ms-transform: scale(1.5);
        -o-transform: scale(1.5);
    }
}
.sparkle span:nth-child(1){
    left: 30%;
    top: 40%;
}
.sparkle span:nth-child(2){
    left: 40%;
    top: 27%;
    font-size: 15px;
}
.sparkle span:nth-child(3){
    left: 50%;
    top: 57%;
    font-size: 12px;
}
.sparkle span:nth-child(4){
    left: 70%;
    top: 67%;
    font-size: 14px;
}
.sparkle span:nth-child(5){
    left: 74%;
    top: 13%;
    font-size: 16px;
}

.blink div{
    width: 3px;
    height: 3px;
    background: #fff;
    z-index: 101;
    position: absolute;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    animation: blink 1.5s ease infinite alternate;
    -webkit-animation: blink 1.5s ease infinite alternate;
}
.blink div:nth-child(2){
    left: 34%;
    top: 13%;
    transform: scale(1.2);
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    -o-transform: scale(1.2);
}
.blink div:nth-child(3){
    left: 54%;
    top: 43%;
    transform: scale(0.6);
    -webkit-transform: scale(0.6);
    -moz-transform: scale(0.6);
    -ms-transform: scale(0.6);
    -o-transform: scale(0.6);
}
.blink div:nth-child(4){
    left: 64%;
    top: 33%;
    transform: scale(1.4);
    -webkit-transform: scale(1.4);
    -moz-transform: scale(1.4);
    -ms-transform: scale(1.4);
    -o-transform: scale(1.4);
}
.blink div:nth-child(5){
    left: 34%;
    top: 63%;
    transform: scale(1.8);
    -webkit-transform: scale(1.8);
    -moz-transform: scale(1.8);
    -ms-transform: scale(1.8);
    -o-transform: scale(1.8);
}
.blink div:nth-child(6){
    left: 14%;
    top: 76%;
    transform: scale(1.5);
    -webkit-transform: scale(1.5);
    -moz-transform: scale(1.5);
    -ms-transform: scale(1.5);
    -o-transform: scale(1.5);
}
@keyframes blink{
    0%{
        box-shadow: 0 0 0 0 #fff;
    }
    25%{
        box-shadow: 0 0 1px 1px #fff;
    }
    50%{
        box-shadow: 0 0 2px 2px #fff;
    }
    75%{
        box-shadow: 0 0 3px 3px #fff;
    }
    100%{
        box-shadow: 0 0 4px 4px #fff;
    }
}

.yy{
    position: absolute;
    top: 80%;
    right: 0%;
}